High Efficiency Amplifier

415

07:02:41

Not a high efficiency amplifier per se, but it gets close to the maximum efficiency possible for a class B Amplifier. I was playing around with the transistors here in EC, and after all this years, like a complete fool, I thought where the fuck is all the voltage dropped in simulation, when handling a low impedance load. In the transistors duuh, so I tweaked their parameters a little and got close to the maximum efficiency. The overall results are pretty good. Low THD, high efficiency etc...
The specs are:

- Output Power - 102W
- Drawn Power - 136W
- Efficiency - 75%
- THD+N - 0.003%
- Ripple rejection - The results are inconclusive, because the op amp is ideal, and in reality the ripple rejection will only be as good as the op amp you use. According to EC the ripple rejection is -315dB, which every engineer will laugh at your face when you tell him that. 

published 9 years ago

faceblast

9 years ago

well yeah there's 2Ω across the default transistor.

thebugger

9 years ago

Yeah, at 4A it's dropping 8V and 32W total. I've always neglected that fact here in EC. Or maybe I haven't I'm not sure, but EC doesn't like you tweaking its transistors, especially with bigger circuits, It tends to give you the no solution thingy

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.